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Solve the simultaneous equations: 2x + y = 18 and x - y = 6

We need to find a value of x to sub into equation 1, so add y to both sides of equation 2: x = 6 + y. Then sub this into the x value of equation 1 and solve to find y: 2(6 + y) + y = 18. 12 + 2y + y = 18. 3y...
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Answered by Anna W. • Maths tutor
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Explain one possible effect on the equilibrium market price of an increase in production costs for firms. (2 marks)

An increase in a firm's production costs might also mean a fall in a firm's willingness to supply a product, thereby resulting in a fall in the quantity of the product supplied, resulting in a new higher equ...
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Answered by Sam H. • Economics tutor
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There are 6 orange sweets in a bag of n sweets. Hannah picks two sweets at random without replacement, and they are both orange. Show that n^2-n-90=0

This is a multi step question that requires both good understanding of probability and maniuplating algebraic fractions.PROBABILITYThe first step is recognizing that as there are 6 orange sweets out of a tot...
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Answered by Ben N. • Maths tutor
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Solve the simultaneous equations. 2x + y =10 and x + y = 4

We should eliminate one of the variables. We do this by writing them on top of one another.3x + y = 10x + y = 4 - 2x = 6 We want to know what X is and what Y is. We currently know what 2x is so we divide the...
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Answered by Grace N. • Maths tutor
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How does Orwell use 'allegory' in 'Animal Farm'?

It is always wise to open an answer on literary device with a definition. Allegory refers to a narrative or section of writing which 'conceals' or 'symbolizes' a parallel or secondary meaning. Then, refer to...
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